What is 0.08 as a percent.

Several years ago, 38% of parents who had children in grades K-12 were satisfied with the quality of education the students r

Colt1911 [192]

Answer:

$0.428 - 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.3995$

$0.428 + 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.4564$

We are confident that the true proportion of people satisfied with the quality of education the students receive is between (0.3995, 0.4564), since the lower value for this confidence level is higher than 0.38 we have enough evidence to conclude that the parents' attitudes toward the quality of education have changed.

Step-by-step explanation:

For this case we are interesting in the parameter of the true proportion of people satisfied with the quality of education the students receive

The confidence level is given 95%, the significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical values are:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The estimated proportion of people satisfied with the quality of education the students receive is given by:

$\hat p =\frac{499}{1165}= 0.428$

The confidence interval for the proportion if interest is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

And replacing the info given we got:

$0.428 - 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.3995$

$0.428 + 1.96\sqrt{\frac{0.428(1-0.428)}{1165}}=0.4564$

We are confident that the true proportion of people satisfied with the quality of education the students receive is between (0.3995, 0.4564), since the lower value for this confidence level is higher than 0.38 we have enough evidence to conclude that the parents' attitudes toward the quality of education have changed.

8 0

3 years ago

Write a word phrase for the following algebraic expression<br> 0.5 (y+3.3)

AlladinOne [14]

0.5(y + 3.3)

The product of 0.5 and the sum of y and 3.3.
0.5 times the sum of y and 3.3

6 0

3 years ago

18 POINTS HELP PLEASE IT'S TIMED

luda_lava [24]

Answer:

whyu

Step-by-step explanation:

whyu

5 0

2 years ago

A pair of shoes originally cost $60. If they are on sale with a mark-down of 25%, how much do they cost now?

pychu [463]

$45!

if u were discounting something, you would do ( .discount amount x original price ) - original amount! you will get a “-“ with the answer, just remove the “-“!!

4 0

2 years ago

What number is one-fourth of the way between 3 and 11.4?

makkiz [27]

<span>4) (11.4 - 3) / 4 = 2.1. 2.1 is one quarter of the interval. 3 + 2.1 = 5.1.</span>

5 0

2 years ago

What is 0.08 as a percent. ​

What is 0.08 as a percent.